freshspin,
I think he was more or less telling the poster to stay away from pentium 4s in laptops, as the pentium-M is vastly more efficient and better in portable machines. However, I would say that they are fine for normal use in a desktop. I personally would recomend that you build your own PC instead of buying a pre built HP, but that's just my personal prefrence.
I'm not sure what's wrong with the MACs at your wife's video art class, but many video companies use macs because they don't exibit this behavior. However, to each his/her own, I'm not going to tell you to use a Mac if you have experience with them and don't like them.
Mariner,
The T42 definitely is a great machine, and it comes in a ton of configurations. I'm sure you can fine one in your price range that you're daughter will like. I would say to avoid the dell 5000 series as I have a few friends who have them and they aren't exactly something I'd want to carry around anywhere (and believe me my friends dont drag them anywhere). I'd say T42 is the size you'd want to stick with. Thinner and leaner than most college text books/binders is great. When you start getting into machines that weigh 8ish lbs you don't want to drag them with you.
As for the powerbook, I'd be inclined to agree that you'll probably get far less "dad my computer stopped working" calls. And chances are that if she does have a problem, and is doing art stuff, she'll have a friend that knows OSX enough to help her. I will also say that the learning curve on OSX is next to non existant. You could play with the computer for a day and you'd find pretty much everything you need to use. Installing programs is sooo simple it's not even funny... and everything just works. One of the things that many people don't consider about the mac platform, and actually complain about, which is also valid, is the lack of choice. Truth is, it's one of their major benifits. Apple designs both the hardware and the OS, which means there's less worrying about compatability, as you're using an OS that's taylored for your machine.
I personally couldn't find a better notebook than my powerbook, but I still do enjoy owning a PC. I'm working on learning linux, and lets face it, PCs are better gaming rigs. Still, when I want to get work done, it's done on the powerbook 🙂